Slide 4

Periglacial Climates· Snow and ice but not all year round· Temps constantly below freezing but not covered in ice- there is a layer of permafrost on or below the surface· High latitudes- low insolation· High altitudes· Albedo- they reflect a lot of solar radiation· Precipitation levels are low· Affected by high pressure conditions which reduces rainfall…read more

Slide 5

Mountain (upland) Climates· Were once covered in ice but aren't anymore· Upland areas may remain periglacial- Alps and Himalayas· They are cool in temp- lose about 1°C every 100m up· They are wet due to orthographic rainfall· Above the tree line· Can exist at any latitude…read more

Slide 6

GlaciersWarm-based glacier:· It's warmer because of the heat from friction· Ice at bottom melts and acts as a lubricant for the glacier to move downhill· Ice at the surface melts if the temp reaches 0°C and meltwater moves down through the glacierCold-based glacier:· The base is cold- ice is frozen to the bottom of the valley= little movement· There's hardly any melting on the surface· They don't cause much erosionGlaciers crack as they move down the valley:· Stresses and strains cause cracks and crevasses in the glacier· Stress can be caused by extensional and compressional flow, calving or tension between the ice attached to the valley sides and back wall and the rest of the glacier· The tension caused by the glacier pulling away from the ice produces as semicircular crevasse at the back of the glacier called the bergschurnd…read more